Sigma® 500

Sigma® 500



Food Approved ProductsWRAS / WRC Approved Product



Sigma® 500 is a high performance PTFE sheet sealing material, which is biaxially orientated. This material contains hollow glass fibres.  

Temperature: -250°C to +260°C maximum.

Max Pressure: 85 bar.

Key Features / Applications: Ideally suited to both standard and low bolt loaded irregular flanges. Typical flanges include glass lined, ceramic plastic coated or uneven / badly distorted flanges. Suitable for sealing all chemicals across the whole pH range, except molten alkali metals, fluorine or hydrogen fluoride. Conforms to FDA regulations and is WRAS approved for use with potable water.   

Standards: TA-LUFT approved (1206528), DVGW DIN 3533-6 tested. Tested in accordance to EC Regulation No. 10/2011, WRAS approved for use with potable water, complies with FDA requirements.


Product Code

Sheet Size (mm)* Sheet Thickness (mm)
SIGMA500-0.75 1500 x 1500 0.75
SIGMA500-1 1500 x 1500 1
SIGMA500-1.5 1500 x 1500 1.5
SIGMA500-2 1500 x 1500 2
SIGMA500-3 1500 x 1500 3

*Other sheet sizes/thicknesses are available upon request, but may be subject to longer lead times.

Note: Maximum temperature and pressure should not be used at the same time. All values are dependant on application. Please refer to the data sheet below.

Technical Specification:

Technical Data Sheet

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